Desiccating apparatus.



E. E. ELWHDGE. DESICCATNG APPARATUS.

-ABPLlcAnoN man APR. 11. 1914.

Patented Apr. 6, 1915.

3 SHEETS-SHEET 1.

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Fm mm Wl TNESSES E. EQELDREDGE.

DESICCATING APPARATUS.

APPucATloN msnv APR. H, i915.

Patented Apr. 6, 1915.

3 SHEETS-SHEET 2.

A mm2/vimv v l E. E. ELDREDGE.

DESICCATING APPARATUS.

APPLICATION msn Avn. n, 1914.

L l 8,73 l Patented Apr. 6, 1915.

. l j. 3 SHEETS-SHEET 3.

W/T/VESSES y ATTORNEYS through the hollow walls.

ln order to provijdemeans for introducing water intoth hollow walls oftheother two cylinders I make use of an inlet pipe 22, see

Fig. 2, which communicates with laterally Referring again to Fig. 1 itwill be seen that apipe 24 for conveying hot air communicates with theinlets 25 leading into the interior of the innermost cylinder. Theseinlets 25, as shown in Fig. 3, are curved so as to cause a whirlingmotion of the -air'as it enters the inner cylinder in the directionshown. by the arrows.

The milk is brought in `from an inlet pipe 26 through an inner tube 27,being ejected at the discharge opening 28. second ho't air pipe 29passes through the center of the pipe 27 and is provided with inlettubes 30 which are curved4 in the opposite direction from the inlettubes 25see Fig.A 3. The effect of the oppositely curved inlets is togive the milk which is kept up by the hot air coming through the pipe 29a rotary-movement as it passes from the opening 2-8 in one direction,while the hot air coming up through the inlets 25 is rotated in theopposite direction.

Rotatably disposed on the exterior portion of the nozzle is a sleeve 31bearing the sprocket wheels 32 and 33. The former is provided with adrive chain 34 for rotating the sleeve. The sleeve bears an arm 35 whichis bent laterally to extend between the outer ,cylinder and adjacentone, as shown in Fig.

y 1, is then bentlaterally and has a return portion which extendsbetween the next two cylinders, is bent again,'as shown in Fig. 1, andterminates in a portion 35a which extends into theinterior of the innercylinder. This is provided with a scraper 36 whose edge is in contactwith the inner wall of the inner cylinder.

r1`he intermediatel p ortions of the arm 35 are provided with similarscrapers `36, see Fig; l3, which are arrangedv to engage the outer wallof one cylinder and the inner wall of the adjacent concentric cylinder.1t will be seen that by rotating the arm 35 the walls between thecylinders will bescraped of any matter which adheres thereto.

rllhe arm 35 is provided with a shaft 37,

by the shaft 37. rlhe latter bears a hub or sleeve38'which carries asprocket wheel 39 arranged to be driven by 'a chain 40 and a secondsprocket wheel 41.

The sprocket wheel 41 is connected with sprockets 42 and 43 on the axesof the conveyers 15b, by means of a chain 44, while the sprocketwheels`45 and 46 are connected with the `sprocket wheel 33 by means ofthe chain 47 for driving the conveyers 15a. A screen 49 is mounted forrotation between the outermost cylinder and the adjacent one and thisscreen is secured to the arm 35 so that as the latter revolves thescreen is. carried with it.

From the foregoing description ofthe various parts ofthe device theoperation thereof may be readily understood. 'As the milk is admittedthrough the nozzle it isv given a whirling motion by means of thehotair. which comes through the inlet 30, while the hot air coming throughthe inlet 25 tends to rotate in the opposite direction. The milk isejected into the inner cylinder in the form ofv a .fine atomized spray,and coming into contact with the Vheat and heated walls of the cylinderlis rapidly dried. The current of air passes the length of the innercylinder and lis deiected by thedelector 38 and caused to pass betweenthe walls of the inner cylinder and the adjacent cylinder, and

thence back and forth betweenthe various cylinders, finally emergingthrough the screen 49. It vwill be noted that this construction providesfor a longer course for the milk to travelwithin a comparativelyrestricted space, this course being heated by the proximity of theheated walls of the cylinders. l

The milk is desiccated or fully dried before it reaches the screen andis deposited upon the walls of the cylinders so that the air aloneemerges at the screen 49. The rotation of the arm 35v with the Scrapersattached theretocauses the'dried matter'which has accumulated on thewalls to be scraped therefrom and to be brought around into positionwhere it enters the openings in the bottomof the cylinders into theconveyer pipes. Here it is conveyed lby the rotation of the conveyerscrews to tlie ends of the conveyer pipe sections where it is depositedupon the next outer cylinder. Thus the desiccated milk is passed alonguntil finally it reaches the discharge conduit 7".

1t 'will be seen that the action of this device is continuous, since theflow of milk and air can be so gaged that only ai'r will be forced outof the machine through the screen while the Scrapers and conveyers takecare of the dried or desiccated milk which the machine produces.

The main purpose of the screen 49 is to prevent the discharge of any ofthe desiccated matter, while permitting the disl' in communication,means orjinjecting an atomized Huid to be desiccated,1nto the 1n- A'desiccating apparatus 'seriesfo' concentric cylinders' spaced' apart, l

` -of concentric cylinders, a common headfoi' 1 "Water, or thetemperature'of the Water; i

comprising -a the spaces between 'adjacent cylinders being invcommunication, means for injecting anA atomifzied Huid to be desiccated,into the'interior of the inner cylinder, and meansfor causing the travelof the iiuid between the Walls of the concentric cylinders.

2. Av desiccatingA apparatus comprising la. yseries of concentriccylinders'- spac'ed apart,l

the spaces between adjacent cylinders being terir of the inner cylinder,means for causing the travel .of the luidlbetvveen the Walls of ltheconcentric cylinderaandinean's for scraping the desiccated matter fromthe 'Walls of the cylinders'.

3. A desiccating apparatus comprising Va series* of 4concentriccylinders spaced apart,- the spaces between' adjacent cylindersbeing incommunication, means forv injectingan, atomized fluid -to'be desiccated,into the 1nterior of the inner cylinder, means for causing the travel ofthe fluid between the VWalls of the concentric. cylinders, means for-scrapingthe' desiccated matter from the Walls of the'cylinders,.andmeans for remnying the.

l desiccated matter from-the devicef 4:. A desiccating apparatuscomprising a an atomized iluid'to be'desiccated, into the interior ofthe linner cylinder, means lfor causing the travel of the uid betweenthel u Walls of the concentric cylinders, means for scraping thedesiccate'dfma'tter from Athe walls of thecylindersfand---means forrremoving the desiccated matter from. thedevice, said last-named means'comprising `a series of conveyers disposed in the Walls of theconcentric cylinders g5. .In a desiccating apparatus, a plurality' ofconcentric cylinders, a common head' for securing said cylinderstogetherat one end,

a second series of cylinders, concentric With j second series ofconcentric cylinders .to- 55.

the -irstls'erieafa head vfor securing said gether, the cylindersof oneseries alternating 'with the cylindersA of the other se-y ries and thelends -of thecylinders of each series being spaced apartjrom the commonhead of the other series. Y l 6. Ina desiccatingapparatus, a plurality asecond series of cylinders, concentric With the first series, a head forsecuring said sec- `ond series of concentric cylinders together,

of concentric: cylinders, a common head for' :securing said cylinderstogether at one end,

the` cylinders of one-series alternating with i ofthe cylinders of each'series being spaced apartjrom the common head of the other'sejries, andmeans; for heating the cylinders of both series.v 1

--the cylindersfthe other series andthe ends' 7.-In a desiccatingapparatus, a; plurality l securing said cylinders together at one end,

' la second sci ieslof cylinders, concentric with theiirst series, ahead for securing said sec-y ond series of concentriccylinders'together',

the cylinders of one series alternating with "l the cylinders ofthe'other series and' the'ends Vof the cylindersof each series beingspaced apart from the` common lheadv of -the other ized fluid into theinner cylinder.

' SQIn aA desiccating apparatus, a plurality series, means for heatingthe .cylinders of. -both series,'and means for orcingian atomofconcentriccylinders, a common head for securingsaidrcylinders togetherat one end, afsfecond series of cylinders, concentricvvith the firstseries, ahead' forsecnring said second series of concentric cylinders.'together,

the cylinders of one series alte1 nating .With the cylinders of .theother 'series and the ends fluid into the inner cylinder, anda scrapingA i device mountedtofrotate about the common thescraping devie beingdisposed between 9. v In a desiccating apparatus, a stationary vcylinderhaving van opening' in its 'inner botaxis' of saidcpncentric cylinders,portions of said scraping device being disposed between Vthe'cylindersand other portions of the ends of the cylinders of one series and'the-common head of the adjacent series.

toni, a` conduitdisposed beneath the .innerf 1Wall of 'the cylinderandbeinglin communic cation Withsaid cylinder through said open- "ing,la" conveyer disposed Within said conduit, means forlejecting anatomizedfluid l intothe cylinder, vand a scraper mounted for rotation aboutv theaXis ofthe cylinder for scraping thejnnerygall of the cylinder,

double vvalled concentric cylinders each having an openingin its bottom,a conduit disposed below ,the inner wall of eacli'ofsaidV cylinders andVbeing coiriinunication With the interior of the cylinder' through saidopening, aconveyer disposed in each of said conduits, .meansl forinjecting anlatomized fluid into v thefinner cylinder, both of saidcylinders being in-communication with `one another, and a scrapingdevice mounted for Vrotation about the common aXis of said concentriccylinders and arranged to engage. the

inner Wall-ofthe other cylinder'. l1, In a deaiccating apparatus, a

outer 'Wall ofV one of said cylinders andthe 10.111 a desiccatingapparatus,a paifl' stationaryeylinder having an opening in its bottom, aconduit disposed beneath the. inner bottom Wall of the cylinder andbeing in communication with said cylinder through said opening, aconveyer disposed Within said conduit, means for ejecting an atomizedfuid into the cylinder, and a scraper mounted for rotation about theaxis of the cylinder for scraping the inner Wall of the cylinder, saidscraper being arranged to pass10 over the opening between the conduitand the interior of the cylinder.

ELMER E. ELDREDGE.

' Witnesses:

L. A. STANLEY, SoLoN C. KEMoN.

